const insert = document.getElementById('insert')
window.addEventListener('keydown', (event) => {
    insert.innerHTML = `
    <div class="key">
    ${event.key === ' ' ? 'Space': event.key}
    <small>event.key</small>
</div>
<div class="key">
${event.keyCode}
<small>event.keyCode</small>
</div> 
<div class="key">
${event.code}
<small>event.code</small>
</div>  
    
    `
})